C#系列教程——if-else例子2

using System;
public class Test2
{
    static void Main()
    {
        Console.Write("请输入数据: ");
        char c = (char)Console.Read();
        if (Char.IsUpper(c))
        {
            Console.WriteLine("字符是大写字符.");
        }
        else if (Char.IsLower(c))
        {
            Console.WriteLine("字符是小写字符.");
        }
        else if (Char.IsDigit(c))
        {
            Console.WriteLine("输入是是数字.");
        }
    }
}